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| author | Johan Hovold <johan@kernel.org> | 2017-11-20 11:45:47 +0100 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2018-06-11 13:40:45 +0100 |
| commit | d5318d302e7cf6583ec85a2a8bfbb3a3910ae372 (patch) | |
| tree | 0867d8a6064becd1d9f8b61efd275303788e6b2b /drivers/video | |
| parent | 2b12dfa124dbadf391cb9a616aaa6b056823bf75 (diff) | |
| download | linux-d5318d302e7cf6583ec85a2a8bfbb3a3910ae372.tar.gz linux-d5318d302e7cf6583ec85a2a8bfbb3a3910ae372.tar.bz2 linux-d5318d302e7cf6583ec85a2a8bfbb3a3910ae372.zip | |
backlight: as3711_bl: Fix Device Tree node leaks
Two framebuffer device-node names were looked up during probe, but were
only used as flags to indicate the presence of two framebuffer device.
Drop the unused framebuffer name along with a likewise unused device
pointer from the driver data, and update the platform data to pass in
booleans instead of the framebuffer strings. This allows us do drop the
node references acquired during probe, which would otherwise leak.
Note that there are no other in-kernel users of the modified
platform-data fields.
Fixes: 59eb2b5e57ea ("drivers/video/backlight/as3711_bl.c: add OF support")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/backlight/as3711_bl.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/video/backlight/as3711_bl.c b/drivers/video/backlight/as3711_bl.c index e55304d5cf07..ca544aa764b8 100644 --- a/drivers/video/backlight/as3711_bl.c +++ b/drivers/video/backlight/as3711_bl.c @@ -28,8 +28,6 @@ enum as3711_bl_type { struct as3711_bl_data { bool powered; - const char *fb_name; - struct device *fb_dev; enum as3711_bl_type type; int brightness; struct backlight_device *bl; @@ -273,7 +271,9 @@ static int as3711_backlight_parse_dt(struct device *dev) fb = of_parse_phandle(bl, "su1-dev", 0); if (fb) { - pdata->su1_fb = fb->full_name; + of_node_put(fb); + + pdata->su1_fb = true; ret = of_property_read_u32(bl, "su1-max-uA", &pdata->su1_max_uA); if (pdata->su1_max_uA <= 0) @@ -286,7 +286,9 @@ static int as3711_backlight_parse_dt(struct device *dev) if (fb) { int count = 0; - pdata->su2_fb = fb->full_name; + of_node_put(fb); + + pdata->su2_fb = true; ret = of_property_read_u32(bl, "su2-max-uA", &pdata->su2_max_uA); if (pdata->su2_max_uA <= 0) @@ -425,7 +427,6 @@ static int as3711_backlight_probe(struct platform_device *pdev) if (pdata->su1_fb) { su = &supply->su1; - su->fb_name = pdata->su1_fb; su->type = AS3711_BL_SU1; max_brightness = min(pdata->su1_max_uA, 31); @@ -436,7 +437,6 @@ static int as3711_backlight_probe(struct platform_device *pdev) if (pdata->su2_fb) { su = &supply->su2; - su->fb_name = pdata->su2_fb; su->type = AS3711_BL_SU2; switch (pdata->su2_fbprot) { |